[Bug translator/10995] New: on-the-fly enabled/disabled probes

[Bug translator/10995] New: on-the-fly enabled/disabled probes

[fche at redhat dot com]

Bug #4935 included script syntax to designate probe enabling conditions,
and bug #6933 has implemented some support for lightweight kprobe
dis/rearming, but the translator is not actually emitting any code to
connect the two.

We should extend the translator and the various probe point family
implementations (tapset*cxx) to support disarm/rearm operations.
The translator would then have to emit code for the probe point
conditionals to invoke disarm/rearm based upon transitions of the
predicate expression values.

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           Summary: on-the-fly enabled/disabled probes
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: fche at redhat dot com
 BugsThisDependsOn: 4935,6933


http://sourceware.org/bugzilla/show_bug.cgi?id=10995

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[Bug translator/10995] on-the-fly enabled/disabled probes

[jkenisto at us dot ibm dot com]

------- Additional Comments From jkenisto at us dot ibm dot com  2009-11-21 01:04 -------
On a related note, in the SystemTap-resident versions of uprobes, a u[ret]probe
handler can call [un]register_u[ret]probe().  A handler can even unregister
itself.  See Section 4.4, "User's Callback for Delayed Registrations", in
runtime/uprobes/uprobes.txt.

U[ret]probe handlers can block, so they could also [un]register k[ret]probes.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=10995

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[Bug translator/10995] on-the-fly enabled/disabled probes

[fche at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |11179
              nThis|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=10995

------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.

[Bug translator/10995] on-the-fly enabled/disabled probes

[fche at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |11550
              nThis|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=10995

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You are the assignee for the bug, or are watching the assignee.